Zobrazeno 1 - 10
of 42
pro vyhledávání: '"P Gersema"'
Publikováno v:
New Journal of Physics, Vol 20, Iss 4, p 042001 (2018)
We present a novel slowing scheme for beams of laser-coolable diatomic molecules reminiscent of Zeeman slowing of atomic beams. The scheme results in efficient compression of the one-dimensional velocity distribution to velocities trappable by magnet
Externí odkaz:
https://doaj.org/article/05e03bbccef64d0fbfe782be95b19310
Publikováno v:
Phys. Rev. Research, 6 June 2022
We prepare mixtures of ultracold $^{39}$K atoms in various hyperfine spin states and $^{23}$Na$^{39}$K molecules in an optical dipole trap at a fixed magnetic field and study inelastic two-body atom-molecule collisions. We observe atom-molecule losse
Externí odkaz:
http://arxiv.org/abs/2109.03605
Autor:
Gersema, P., Voges, K. K., Borgloh, M. Meyer zum Alten, Koch, L., Hartmann, T., Zenesini, A., Ospelkaus, S., Lin, J., He, J., Wang, D.
We probe photo-induced loss for chemically stable bosonic $^{23}$Na$^{87}$Rb and $^{23}$Na$^{39}$K molecules in chopped optical dipole traps where the molecules spend a significant time in the dark. We expect the effective two-body decay to be largel
Externí odkaz:
http://arxiv.org/abs/2103.00510
Autor:
Voges, Kai K., Gersema, Philipp, Borgloh, Mara Meyer zum Alten, Schulze, Torben A., Hartmann, Torsten, Zenesini, Alessandro, Ospelkaus, Silke
We report the creation of ultracold bosonic dipolar $^{23}\textrm{Na}^{39}\textrm{K}$ molecules in their absolute rovibrational ground state. Starting from weakly bound molecules immersed in an ultracold atomic mixture, we coherently transfer the dim
Externí odkaz:
http://arxiv.org/abs/2008.05439
Autor:
Tiemann, Eberhard, Gersema, Philipp, Voges, Kai K., Hartmann, Torsten, Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
Phys. Rev. Research 2, 013366 (2020)
We report on deviations beyond the Born-Oppenheimer approximation in the potassium inter-atomic potentials. Identifying three up-to-now unknown $d$-wave Feshbach resonances, we significantly improve the understanding of the $^{39}$K inter-atomic pote
Externí odkaz:
http://arxiv.org/abs/1912.07395
Autor:
Voges, Kai K., Gersema, Philipp, Hartmann, Torsten, Schulze, Torben A., Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
Phys. Rev. A 101, 042704 (2020)
We create weakly bound bosonic $^{23}\textrm{Na}^{39}\textrm{K}$ molecules in a mixture of ultracold $^{23}\textrm{Na}$ and $^{39}\textrm{K}$. The creation is done in the vicinity of a so far undetected Feshbach resonance at about $196\,\text{G}$ whi
Externí odkaz:
http://arxiv.org/abs/1912.04395
Autor:
Voges, Kai K., Gersema, Philipp, Hartmann, Torsten, Schulze, Torben A., Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
New J. Phys. 21 (2019) 123034
We spectroscopically investigate a pathway for the conversion of $^{23}\textrm{Na}^{39}\textrm{K}$ Feshbach molecules into rovibronic ground state molecules via STImulated Raman Adiabatic Passage (STIRAP). Using photoassociation spectroscopy from the
Externí odkaz:
http://arxiv.org/abs/1910.13771
Autor:
Petzold, Maurice, Kaebert, Paul, Gersema, Philipp, Poll, Timo, Reinhardt, Niklas, Siercke, Mirco, Ospelkaus, Silke
We describe a novel Zeeman slowing method reported in (Petzold et al (2018 New J. Phys. 20 042001)) and compare it to conventional radiative beam slowing schemes. The scheme is designed to work on a type-II level structure making it particularly attr
Externí odkaz:
http://arxiv.org/abs/1811.10404
Autor:
Hartmann, Torsten, Schulze, Torben A., Voges, Kai K., Gersema, Philipp, Gempel, Matthias W., Tiemann, Eberhard, Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
Phys. Rev. A 99, 032711 (2019)
We present a detailed study of interspecies Feshbach resonances of the bosonic $^{23}\mathrm{Na}+$$^{39}\mathrm{K}$ mixture for magnetic fields up to $750 \, \mathrm{G}$ in various collision channels. A total of fourteen Feshbach resonances are repor
Externí odkaz:
http://arxiv.org/abs/1810.00608
We present a novel slowing scheme for beams of laser-coolable diatomic molecules reminiscent of Zeeman slowing of atomic beams. The scheme results in efficient compression of the 1-dimensional velocity distribution to velocities trappable by magnetic
Externí odkaz:
http://arxiv.org/abs/1712.05157